3y+ 2x = 12
y=x-1

What is x and y quick! ​

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?